690075 has 18 divisors (see below), whose sum is σ = 1236404. Its totient is φ = 367920.

The previous prime is 690073. The next prime is 690089. The reversal of 690075 is 570096.

It is not a de Polignac number, because 690075 - 2¹ = 690073 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (690073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1309 + ... + 1758.

2⁶⁹⁰⁰⁷⁵ is an apocalyptic number.

690075 is a deficient number, since it is larger than the sum of its proper divisors (546329).

690075 is a wasteful number, since it uses less digits than its factorization.

690075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 690075 is about 830.7075297600. The cubic root of 690075 is about 88.3687607587.

The spelling of 690075 in words is "six hundred ninety thousand, seventy-five".